Basic delayed job implementation

app/models/concerns/domain_version_observer.rb

@@ -0,0 +1,30 @@
+module DomainVersionObserver
+  extend ActiveSupport::Concern
+
+  included do
+    after_save :delayed_whois_update
+  end
+
+  private
+
+  def delayed_whois_update
+    name = domain_name
+    return unless name
+    body = snapshot
+    delay.update_whois(name, body)
+  end
+
+  # not sure we need to pass in the params since i don't know if delayed job has access to
+  # all the regular attributes and stuff
+  def update_whois(domain_name, body)
+    wd = WhoisDomain.find_or_initialize_by(name: domain_name)
+    wd.body = body
+    wd.save!
+  end
+
+  def domain_name
+    name = reify.try(:name)
+    name = load_snapshot[:domain][:name] if event == 'create'
+    return name if name
+  end
+end

app/models/domain_version.rb

@@ -1,5 +1,6 @@
 class DomainVersion < PaperTrail::Version
   include UserEvents
+  include DomainVersionObserver if Setting.whois_enabled  # unless Setting.whois_enabled
 
   scope :deleted, -> { where(event: 'destroy') }
 

app/models/whois_domain.rb

@@ -0,0 +1,3 @@
+class WhoisDomain < WhoisServer
+  self.table_name = 'domains'
+end

app/models/whois_server.rb

@@ -0,0 +1,4 @@
+class WhoisServer < ActiveRecord::Base
+  self.abstract_class = true
+  establish_connection :"#{Rails.env}_whois"
+end